Combination-lock.



No. 843,365. PATENTED FEB. 5, 1907. J. W. RAYMOND.

COMBINATION LOCK.

APPLICATION FILED MAY 22, 1906.

I W W m: Nclmls PETERS cm. wxsmuaroN. 0. c.

JOHN W. RAYMOND, OF BEVERLY, MASSACHUSETTS.

COMBINATION-LOCK.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed May 22. 1906. Serial Ho 318.274.

To all whom it 'lrmg concern:

Be it known that JOHN W". RAYMOND, a citizen of the United States, and a resident of Beverl in the county of Essex and State of Massachusetts, have invented new and useful improvements in Combination-Locks, of which the following is a specification.

My invention relates to combina ion-locks, and consists in improvements in the external operating devices for such locks, my object being to provide a dial or analogous operating device which may be worked easily and accurately by the sense of touch and which will therefore be easily operated in the dark as in the light. By my improvements also I am enabled with comparatively few divisional points upon the relatively movable members of the lock-operating device to obtain the ellect of much finer subdivisions than are usually found upon the dial of a com bination-lo ck.

In the drawing hereto annexed there is shown an embodiment of my invention specifically expressed as a rotatable dial conccn trically mounted inside a ring-plate. Other relatively movable parts may be substituted for the specific dial and ring-plate construction without, however, departing from my invention herein described.

As my invention does not relate to the interior parts of a combination-lock, these are not shown. They may be any of the wellknown and adopted forms which. are susceptible of being operated by a spindle or equivalent connection from a movable dial.

A represents the dial, which is externally mounted upon the door of a safe or other locking inclosure, and B is a ring-plate secured to the safe-door or analogous object and concentric with the dial A. Upon the ring-plate B and preferably integral therewith there are placed teeth or projections b l) I), &c., these being preferably evenly spaced around the ring-plate B. In the specific instance shown in the drawing ten of these projections are placed upon the ringplate. The dial A is provided with similar projections a a a &c., these projections being likewise evenly spaced and extending out to the circumference of the dial. For the sake of accuracy in manipulation, as will jections shall approach each other closely and be of the same size at their respectively most nearly contiguous portions.

I have shown the dial A in the specific instance illustrated by lhe drawing as having one more projection than the ringplalic B namely, llso that the dial is circumferem iially divided by those projectionsinto eleven cqual arcs, whilc the riug-plate is circumfercnlially divided by its projections into ten cqual arcs. As the arcs between the circumfcrcniial divisimi-points of the dial and ringplatc represent dill'rrcnt fractional divisions of the entire circuurlcrcncc, their spacing is reciprocally dill'crcnlial. An equivalent reciprocal spacing diil'crcniial may be obtained by having one more division-point in the rin plalo than there is on the dial instead of the reverse arrangement specifically shown for illustration in the drawing. By having one more projection upon one of the members than lhcrc is upon the other I am enabled to obtain by means of the differential between them very closely-measurcd arcs of movement of the dial within the plate. Upon one of the projccllons on the ring-platc, as l), I place a di'll'crenliating mark, projection, or depression, shown in the drawing as a small screw, and upon one of the projections on the dial I place also a dil'l'crmilialing feature, shown as the small screw upon the projection 0. Thus the projection I) may be considered the master-point upon the ring-plate and the dill'rrcniiaiing feature on the projection a may be considered as the zero-point or point of origin of the dial. These dillereniiaiing features may be of any character, preferably such as renders them tactually perceptible and differentiable from the other projections if the linger of the operator be placed upon the projection a, which can thus easily be found by touch, and then if he rotat'cs the dial in either direction, keeping his linger upon the said projection a, he will be made aware by the sense of touch of the passing of this projection a by each of the projcciionsonlhc dial-plate B in succession and in the illustrative instance hcrc shown will know that each time his finger touches a projcclion on the ring-plate he has moved the dial one-tenth of a complete rotation since touching the last preceding projection on the ring-plate B, orif starlingwiih the master projections b and a in cmijunction the operator moves successive projections on the dial into conjunction with the master projection I) he ,1 of projections a b are brought into opposition of conjunction, he will then have moved the dial one one hundred and tenth part of a revolution. If it be desired to move the dial only one-half of one one hundred and tenth of a revolution, the operator places his thumb and finger over two adjacent projections, as 1) b and brings the opposed projections, as a a leaving the overlap of the projections b b about even as regards the approximately opposed projections a (L The numbers of any given combination may be selected arbitrarilyas, for instance, the number 34. To bring the dial and ring-plate into the relation represented by this number 34, the dial will be started with the two master projections a b in opposition and the master projection a then moved so as to pass b b and to come to rest opposite 5 The eXact opposition of a and b is easily secured by the sense of feeling. Then a will be nearly opposite b and the operator passes to a and lines it up with 6 then lines up a with b and then a with b, then a with 6 By this means the master projection a has been moved beyond the projection 6 four one hundred and tenths of a revolution. If the number arbitrarily selected were 34 after lining up a with b the operator will place his finger over a and b and his thumb over a and b and even up the projections of b and b over a and (1 thus placing the master projections a four and onehalf one hundred and tenths or nine two hundred and twentieths beyond the projection b.

A dial and ring-plate such as above described may be substituted for the ordinary dial and ring-plate, which are provided with a single master-point upon the plate and one hundred even subdivisions of the circumference of the dial, for the reason that from the more minute subdivision made possible by my improvements above described a sui'liciently close approximation may be made to any one of the strictly decimal divisions of the ordinary dial to line up the interior disks of the combination-lock.

The specific difierentiation between the tactually perceptible divisions of the dial and ring-plate or equivalent relatively movable members may be varied to suit different situations without departing from the invention above described, and for the specific form of stationary ring-plate and concentric rotating dial other relatively movable members may be substituted and provided with differentially-spaced and tactually-perceptible divisions and at the same time embody this invention.

What I claim, and desire to secure by Let ters Patent, is

1. The combination of a dial and ringplate, the dial and ring-plate provided respectively with circumferential tactuallyperceptible division-points, there being one more point on one of said members than on the other. I

The combination of a dial and ringplate, the dial and ring-plate provided respectively with evenly-spaced circumferential tactually-perceptible division-points, there being one more point on one of said members than on the other.

3. The combination of a dial and ringpl ate, the dial and ring-plate provided respectively with circumferential tactually-perceptible division-points, reciprocally difl erentlal in their spacing, one of said points on each of said members being tactually distinguishable from the others.

4. The combination of a dial and ringplate, provided respectively with circumferential tactually-perceptible divisionpoints, reciprocally differential in their spacing, arranged close to the line of separation between the dial and plate.

5. The combination of a dial and ringplate provided respectively with evenlyspaced circumferential tactuallyperceptible division-points there being one more point on one of said members than on the other, said points arranged close to the line of separation between the dial and ring-plate.

6. The combination of a dial and ringplate, provided respectively with circumfen ential division-teeth arranged close to the line of separation between the disk and plate, there being one more tooth on one of said members than on the other, said teeth be ing of the same dimensions on each member where they approach the nearest to each other.

Signed by me, at Boston, Massachusetts, this 17th day of May, 1906.

JOHN W. RAYMOND. l/Vitnesses:

JosEPH T. BRENNAN, CAsPAR RoeERs.

ICC 

